Unless you specify a range, numbers keep on going. Theoretically, infinity has an infinite number of factor pairs.
Between 35 and 40, 36 has the most factor pairs.
100 and 7
The geometry of the molecule actually determines number of electron pairs on the central atom. The electron pairs will be arranged in such a way to minimize the repulsion and therefore, have the lowest possible energy.
The centipedes have the most legs.It can have a varying number of legs from under 20 to over 300. Centipedes have an odd number of pairs of legs, e.g. 15 or 17 pairs of legs (30 or 34 legs) but never 16 pairs (32 legs).
A trapezoid (in most cases)
They have a converse relationship. A factor is a number that divides into another, with no remainders. A multiple is something that can be multiplied by another number, to reach the original number that you had. Thus: Original number / a factor = a multiple Multiple * (the correct factor) = original number. "the correct factor", because most number have more than one factor. But only one factor * multiple will give the original number.
The animal with the most ribs is the baleen whale, which can have up to 100 to 108 pairs of ribs depending on the species.
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In math, a common factor usually refers to a factor that two or more numbers have in common. But, if you mean the most frequently occurring factor, that would be different. Since 1 divides every number, it would be the most common (frequently occurring) factor.
There are many, including the word "misspell" and pairs such as "lose" and "loose". (There are 100 examples at the related link below.)
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